#4051BF#4051BF

#4051BF is a mid, vivid blue. Relative luminance 0.107; OKLCH L 48.7% C 0.172 H 271.8°. Best body text is #FFFFFF at 6.67:1 contrast (WCAG AA passes).

Color values

HEX	#4051BF
RGB	rgb(64, 81, 191)
HSL	hsl(232, 50%, 50%)
HSV	hsv(232, 66%, 75%)
CMYK	cmyk(66.5%, 57.6%, 0%, 25.1%)
CIE-LAB	lab(39.13, 29.27, -59.85)
CIE-LCH	lch(39.13, 66.63, 296.06°)
OKLab	oklab(48.66% 0.0053 -0.1723)
OKLCH	oklch(48.66% 0.172 271.8)
XYZ	xyz(14.4576, 10.7351, 50.5903)
Luminance	0.1074 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4051BF #BFAE40

analogous

#4090BF #4051BF #6F40BF

triadic

#4051BF #BF4051 #51BF40

tetradic

#4051BF #BF4090 #BFAE40 #40BF6F

square

#4051BF #BF4090 #BFAE40 #40BF6F

split-complementary

#4051BF #BF6F40 #90BF40

monochromatic

#212A63 #313E91 #4051BF #6E7BCE #9CA5DE

Accessibility & contrast

On white

6.67

#4051BF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.15

#4051BF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4051BF

6.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4051BF	#FFFFFF	#000000	##FFFFFF
##4051BF	1.00	6.67	3.15	6.67
#FFFFFF	6.67	1.00	21.00	1.00
#000000	3.15	21.00	1.00	21.00
##FFFFFF	6.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0062C3

Deuteranopia (green-blind)

#0057BD

Tritanopia (blue-blind)

#006C80

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #4051bf;
/* rgb */ color: rgb(64, 81, 191);
/* oklch */ color: oklch(48.7% 0.172 271.8);

Tailwind

colors: {
  custom: {
    50: '#8381d3',
    500: '#4051bf',
    950: '#000000',
  },
}

SCSS

$custom: #4051bf;
$custom-light: #8381d3;
$custom-dark: #000000;

JSON

{
  "hex": "#4051bf",
  "rgb": {
    "r": 64,
    "g": 81,
    "b": 191
  },
  "hsl": {
    "h": 231.969,
    "s": 49.804,
    "l": 50
  },
  "oklch": {
    "l": 0.48664,
    "c": 0.17237,
    "h": 271.8
  },
  "luminance": 0.10736
}

Semantic roles & 50–950 ramp

primary

#4051BF

secondary

#CAC291

accent

#C74ED9

background

#F8F7FD

surface

#F0EEFA

border

#CBC9D3

text

#0C0A14

muted

#7D7C83

Preview Lab

Preview with #4051BF

Body copy rendered with the generated semantic roles for this colour.

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